The Series-C round, which closed last week, also saw participation from Knowlarity's existing backers, Mayfield Fund and Sequoia India, and comes more than two years after the Singapore-headquartered company announced its last equity financing round, estimated at about Rs 90 crore.

“The markets that we open in are not only large but present their own unique set of challenges. We are expanding our operations in the Middle East, Africa and Apac region, and some of the money will go towards building more products and enhancing our technology capabilities," Ambarish Gupta, chief executive of Knowlarity, told ET.

The seven-year-old company, which has offices in Bengaluru, Gurgaon and Mumbai, has raised $44 million till date, across multiple rounds. Gupta, however, did not disclose the valuation of the company post the round or the stake picked up by the investors.

“In an age when customers' demand for immediacy and first class service is at an all-time high, those businesses with most efficient interactions with clients will benefit from unparalleled superiority in the market," said Dominic Halfpenny, partner at Delta Partners Capital.

Delta Partners is the growth stage investment arm of emerging markets-focused telecom, media and digital ad visory firm Delta Partners Group, and has made a good chunk of its investments across Africa, Central and Eastern Europe, West Asia and South-East Asia.

Founded in 2009 by IIT Kanpur alum Gupta and Pallav Pandey, who later quit to start his own venture, Knowlarity provides communication tools, such as Super Receptionist and SmartIVR, to a mix of SMEs and large enterprises. Investment bank Signal Hill acted as the exclusive financial advisor for the transaction.

The latest round of funding also includes an undisclosed amount of venture debt provided by Trifecta Capital, which was founded by ex-Canaan Partners India managing director Rahul Khanna and former Accenture senior executive Nilesh Kothari, as well as from non-banking financial company BlackSoil Capital. “This is primarily an equity round, with a small venture debt component," Gupta said. According to the chief executive, the company will use part of the proceeds towards potential acquisitions.

Knowlarity has announced a few buy outs over the last two years, having snapped up Unicom Tech labs, a Delhi-based cloud telephony startup in 2014 for an undisclosed sum.

It was reported in May that Knowlarity, which competes with companies such as Exotel and Ozonetel, had also acquired customer engagement firm Smartwards Services. The terms of the transaction were again not disclosed.

“Acquisitions are a very opportunistic activity. We will not restrict ourselves to India, but will also look beyond its borders for potential deals," Gupta said.